Portable computer



FIG. 1 is a top plan view of a portable computer showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a bottom plan view thereof; and

FIG. 7 is a top, front, right side perspective view on a slightly reduced scale, the display being shown in the opened position. 

The ornamental design for a portable computer, as shown and described. 